Magnetic excitation of oscillation of magnetically levitated liquid column

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part I

Article type: Research Article

Authors: Yamane, Ryuichiro^{a; *} | Kinoshita, Tetsuya^b | Park, Myeong-Kwan^c

Affiliations: [a] Kokushikan University, 4-28-1, Setagaya, Setagaya-ku, Tokyo 154-8515, Japan | [b] Central Japan Railway Co., Central Towers, 1-1-4, Naeki, Nakamura-ku, Nagoya, 450-6101, Japan | [c] Pusan National University, Changjeon-dong, Kumjeong-ku, Pusan 609-735, Korea

Correspondence: [*] Corresponding author: Ryuichiro Yamane, Tel./Fax: +81 3 5481 3332; E-mail: yamane@kokushikan.ac.jp

Abstract: Magnetic levitation of molten metal can be simulated even in weak magnetic field by use of magnetic fluid as a surrounding fluid. The levitated liquid column is desirable to be stable, but it can be deformed or displaced from the equilibrium position. In the present research the disturbance is magnetically given to the liquid column and the excited oscillation is studied experimentally and analytically. The liquid column has inherent natural frequencies, and a kind of resonance occurs at these frequencies, which will lead to the instability.

Keywords: Magnetic fluid, levitation, instability

DOI: 10.3233/JAE-2010-1186

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 785-789, 2010